A Method for Optimizing the Elastic Support Span of a Gearbox in a Wind Turbine

Abstract

The invention discloses an optimization method for the wind-generation-set gear-case elastic support span. The optimization method includes the steps that 1, according to the initial parameter of a target wind generation set, a wind-generation-set transmission chain model containing a gear case model is set based on the many-body dynamics, and the initial parameter comprises an initial value of the span of a gear-case elastic support; 2, the value of the span in the wind-generation-set transmission chain model is continuously adjusted, and is subjected to modal and time domain analysis during adjusting every time, the potential resonant frequency obtained by modal and time domain analysis can be avoided after adjustment, and the adjusted wind-generation-set transmission chain model is output; 3, the value of the span in the adjusted wind-generation-set transmission chain model is continuously subjected to fine tuning optimization, the operating characteristic of a transmission chain in the wind-generation-set transmission chain model is best accordingly, and the best span value is obtained and output. By means of the optimization method, the resonance risk of the transmission chain can be avoided, and meanwhile the movement performance is best; the optimization method has the advantages of being simple in achieving method, reasonable in span design and high in optimization efficiency.

Description

technical field

[0001] The invention relates to the technical field of design of a three-point support type wind power generating set, in particular to a method for optimizing the elastic support span of a gearbox in a wind power generating set. Background technique

[0002] The transmission chain is the most important mechanical part of the wind turbine. Its main function is to convert the wind energy captured by the wind rotor into mechanical energy, which is then transmitted by a series of mechanical components to convert the mechanical energy into electrical energy in the generator. As an important mechanical part of the doubly-fed wind turbine, the gearbox mainly increases the speed of the wind rotor and transmits it to the generator to meet the speed required by the generator for power generation. The gearbox is usually supported by elastic elements and installed on the main frame. The front end of the gearbox is connected to the main shaft, and the main shaft is suppo...

Examples

Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0031] Such as figure 1 As shown, the method for optimizing the elastic support span of the gearbox in the wind turbine in this embodiment includes:

[0032] 1) According to the initial parameters of the target wind turbine, the transmission chain model of the wind turbine including the gearbox model is established based on multi-body dynamics. The initial parameters include the initial value of the span of the elastic support of the gearbox;

[0033] 2) Constantly adjust the value of the span in the transmission chain model of the wind turbine, and perform modal and time-domain analysis every time it is adjusted, so that the potential resonance frequency obtained by the modal and time-domain analysis can be avoided after adjustment, and the output adjustment D...

technical field

[0001] The invention relates to the technical field of design of a three-point support type wind power generating set, in particular to a method for optimizing the elastic support span of a gearbox in a wind power generating set. Background technique

[0002] The transmission chain is the most important mechanical part of the wind turbine. Its main function is to convert the wind energy captured by the wind rotor into mechanical energy, which is then transmitted by a series of mechanical components to convert the mechanical energy into electrical energy in the generator. As an important mechanical part of the doubly-fed wind turbine, the gearbox mainly increases the speed of the wind rotor and transmits it to the generator to meet the speed required by the generator for power generation. The gearbox is usually supported by elastic elements and installed on the main frame. The front end of the gearbox is connected to the main shaft, and the main shaft is suppo...

Examples

Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0031] Such as figure 1 As shown, the method for optimizing the elastic support span of the gearbox in the wind turbine in this embodiment includes:

[0032] 1) According to the initial parameters of the target wind turbine, the transmission chain model of the wind turbine including the gearbox model is established based on multi-body dynamics. The initial parameters include the initial value of the span of the elastic support of the gearbox;

[0033] 2) Constantly adjust the value of the span in the transmission chain model of the wind turbine, and perform modal and time-domain analysis every time it is adjusted, so that the potential resonance frequency obtained by the modal and time-domain analysis can be avoided after adjustment, and the output adjustment D...

Images